Search found 29 matches

by Rrobinet
Fri Feb 03, 2023 10:04 am
Forum: General Discussion
Topic: ESP32 telnet server catching CTRLC
Replies: 1
Views: 1287

Re: ESP32 telnet server catching CTRLC

Well, This is a stupid question of course. CTR+[x] is not to handle as an ASCII character (as for normal data entry) but as a string of binary code. Typically CTRLC sends to the server a hexadecimal string of FFF4FFFD06. So I did manage to handle these specific strings with my telnet server interact...
by Rrobinet
Thu Feb 02, 2023 4:06 pm
Forum: General Discussion
Topic: ESP32 telnet server catching CTRLC
Replies: 1
Views: 1287

ESP32 telnet server catching CTRLC

Hi,

I have a Telnet server running that stops to work when a telnet client sends a CTRL C character.
Is it a way to catch this break character from the client.

The script is in C++ compiled with ARDUINO IDE
Thanks in advance
by Rrobinet
Sat Jul 23, 2022 8:14 am
Forum: General Discussion
Topic: FFAT and SD card
Replies: 0
Views: 1308

FFAT and SD card

Hello, I hope this is not a stupid question !!! Is it possible to use FFAT file system with an SD card rather with memory? I would like to use RRD tools as central database (on SD card) to collect and later graph sensor data. According to https://github.com/lbernstone/rrdtool_ESP32, FFAT is the only...
by Rrobinet
Tue Jan 25, 2022 7:45 am
Forum: ESP32 Arduino
Topic: How to handle ESP32 concurrent SPI bus access?
Replies: 3
Views: 5459

Re: How to handle ESP32 concurrent SPI bus access?

Is it Arduino which is responsible to port the ESP32 library to the Arduino IDE ?
I read in the library header:
Copyright 2015-2016 Espressif Systems (Shanghai) PTE LTD

It doesn't matter which platform to use, explanations of this issue using the ESP-IDF libraries is also OK for me.

Robert
by Rrobinet
Mon Jan 24, 2022 8:53 am
Forum: ESP32 Arduino
Topic: How to handle ESP32 concurrent SPI bus access?
Replies: 3
Views: 5459

How to handle ESP32 concurrent SPI bus access?

Hi, I try to understand how the ESP32 SPI library manages concurrent SPI access on the same bus and more specifically when a transaction is initiated by an Interrupt. For interrupts, the Arduino SPI library manages that type of conflict using the SPI_HAS_TRANSACTION flag allowing the use usingInterr...
by Rrobinet
Sat Jan 15, 2022 9:50 am
Forum: Documentation
Topic: ESP32 GPIO Configuration (gpio_pad_select_gpio)
Replies: 3
Views: 28072

Re: ESP32 GPIO Configuration (gpio_pad_select_gpio)

OK .... I understand it but after some tests despite the fact lack of documentation (with the exception of the one of Kolban)
Thanks
Robert
by Rrobinet
Wed Jan 12, 2022 9:09 am
Forum: Documentation
Topic: ESP32 GPIO Configuration (gpio_pad_select_gpio)
Replies: 3
Views: 28072

ESP32 GPIO Configuration (gpio_pad_select_gpio)

Hello,

I couldn't find in the ESP32 documentation any reference to

Code: Select all

gpio_pad_select_gpio()
Is this function obsolete or replaced by :

Code: Select all

gpio_config()
Alternatively where can I found a description and of course the need to use various gpio_pad_xx() functions.

Thanks in advance
Robert
by Rrobinet
Wed Aug 12, 2020 3:30 pm
Forum: ESP32 Arduino
Topic: ESP32-CAM Server protected with user/password
Replies: 0
Views: 2580

ESP32-CAM Server protected with user/password

Hi, I am using the CameraWebServer example with an ESP32-CAM without problem, however I couldn't find a way to protect the server access with username and password. This sketch is using the esp_http_server.h library and after reading the https://docs.espressif.com/projects/esp-idf, I was unable to u...
by Rrobinet
Sat Jun 06, 2020 8:47 am
Forum: General Discussion
Topic: How to detect an HTTP connection with the esp_http_server.h library ?
Replies: 1
Views: 4403

How to detect an HTTP connection with the esp_http_server.h library ?

Hello, Trying to build an surveillance camera with the esp32-cam module, I want to be able to detect if a HTTP connection the the ESP32 as WEB server is started yes or not. As basic sketch I am using the CameraWebServer.ino from the ESP-ARDUINO set. I must say that I have a big problem to understand...
by Rrobinet
Sat Nov 24, 2018 9:58 am
Forum: General Discussion
Topic: How to synchronise multiple SPI interupts
Replies: 2
Views: 4665

Re: How to synchronise multiple SPI interupts

Thank-you for your answer.
I don't plan to dig into the FreeRTOS code which e is above my capacities. However I think I understand the way I will be able to implement the semaphore technique that you have mentioned.
Robert